Help! I need advice on losing weight! :)

Depending on your age and family dynamic, you do have some limitations.

Options which perhaps don't put you at odds with your family: eating smaller portions at family meals and/or increasing your activity to account for higher calories consumed. It may be a bit of a guessing game but if your issue now is that you're maintaining (you mention no loss in a few months but don't indicate you're gaining) then either of these or a combination should turn the tide back to a weekly deficit.

Have you recalculated your daily calorie amount since losing all that weight? (which is awesome btw - congrats!)
Your TDEE is going to be a lot different from when you were 30lbs heavier and now.

Like Staci said, it doesn't seem as though your gaining. Most likely just maintaining which is not bad.

I would figure out your new TDEE, subtract 20% for a reasonable deficit, and start there. Log as accurately as you can when you eat with your family.

Sometimes you're just going to have to say no to that food and cook your own.

You have two options: tell the family "No, thank you" or eat it.

The choice is yours.

If you feel you can't say No and are willing to sacrifice what you want to keep the peace, give up on the weight loss.

If you're really determined and think this is setting you back, you're going to have to firm (but polite) for a while.. "No, thank you." Repeat it over and over. There will be ruffled feathers, at first. Some people will never stop making rude comments. But as you lose and they see it, some will start congratulating you.

Try not to get mad, especially if the fat ones put you down. Always realize that when people put you down, it's because they feel inadequate and think that by putting you down, they will feel better. They're trying to reassure themselves that they're okay. It just comes out as rude and insulting. They have problems. Don't let their problems become yours.

Hang in there.

You can do it.

If you know some of the favorite family meals or staple dishes that are usually served you can add all of the ingredients and create your own food so that you can log it later. Obviously you will then need to break it into serving sizes. It's a pain but worth it. And don't be afraid to share your findings with your family! My other half always wants to order take out dinners and constantly pushes the salads as a "good diet option" for me. So one night I went ahead and ordered the salad, stood in our kitchen and completely dissected the entire thing into weighable/measureable/TRACKABLE amounts. When I was all done (he had finished eating by this time) I put it in front of him and told him to take a wild guess. His healthy take out option had 1350 calories!!! When I explained that that was more than I consume in an entire day, he backed off and stopped pushing take out food on me. The ones we love can be the hardest on us especially if they aren't fighting the same battle as we are. Don't let them make you question your choices though. This is for you, not them and hopefully they will stop pushing after a demo or two. Good luck!!