Does your weight loss have an effect on friends?

Ok so i have a friend (since jhs) who has also recently became a coworker of mine(i got her a job where i work). I know that she also is stressed about about her weight and is interested in losing 20lbs. So much so, that she joined a gym like 5 months ago. The problem is... she never goes lol.

At the time that she joined she wanted me to join with her, because she knew i wanted to lose weight as well, but i just didn't have the time for it. i was in my last semester at college and i was working full time and constantly pull all nighters with HW. The last thing i wanted was to be too tired to do hw because i wanted to go to a gym. Or to pay for a gym membership i wasn't using because i was wrapped up in school. I always said i would do something about my weight eventually, but that school came FIRST.

So when i graduated last month i researched a bunch of gyms and joined one. I didn't join hers for many reasons. I wanted an all women gym to feel comfortable and hers had guys, hers was way out of the way for me (like a extra half hour on the train) while mine is on the way home from work, hers is 70$ a month while mine is 15$. She was unhappy about it but i told her "hey its nothing personal i just dont feel comfortable working out around guys, and im flipping cheap and broke rih now lol, i also want to make sure i go, if its out of the way for me i wont go as much."

She tried to cancel her membership to join mine but she is locked into a contract for 1 year so she cant.

So everyday she asks me if i am going to the gym? (i've been going everyday after work for 2 weeks - 5/d per week and taking weekends off) and when i say ye she says things like " really?! again?! " or "why? u went yesterday?" or "your going to hurt yourself stop overdoing it"

and whenever im eating something healthy at work she comes up to me with a disgusted face and asks me what the hell im eating. and i'll tell her and shes like ew im getting pizza lol. I try to share my healthy stuff sometimes with her to try to expand her horizons because i know she is unhappy with her weight but she thinks everything is "gross"

i go to the store with her and try to buy something healthy and she just like "ew you with your nuts and wierd food" and shakes her head. i tell her hey i lost 8 lbs im doing something right lol but she just shakes her head at me lol.

another thing: i love coffee to death. We used to go get coffee all the time. but once school stopped, i stopped drinking coffee because i tent to put a buttload of sugar into it and im trying to be healthy. and now everyday she is offering to buy me coffee and showing me her coffee and stuff.

it feels like she is purposefully doing these things to psych me out or something. Maybe its not intentionally....
but I cant quite figure out what it is.... is it hating? is it unmotivating? is it jealousy? is she mad that i didn't join her gym?
is this stuff in my head? cuz I love her but these things are starting to bother me.