I can sort of relate.
I was in a relationship with an older man and he was a fit retired Army vet.
He didn't mind me being a gainer and was really supportive and if gaining made me happy then he was OK with that.
I have always been into chubby all the way up to really fat guys and he knew that.
I got him to gain 20 lbs which on him it was hard to see the gain because he was pretty buffed. It just looked like more muscle.
He didn't like the extra 20 lbs and lost it.
You can't force anyone to do something they don't want to do.
She will probably keep gaining if you do because she knows you love her unconditionally.

I agree.
Eat what you like just more of it on a daily basis.
Getting full at each meal helped me to gain and also the ability hold more food.
Then there is this point where you eat just to be doing something and not because you are hungry.
Being on anti seizure meds (dilantin) I did gain a lot but only because the meds made me hungry all the time I still had to eat a lot to gain weight.

I agree.
Gaining weight isn't as easy as most people think.
It was hard work for me for the first few years.
Tho' not an active gainer currently I eat a lot just to maintain my fatness.

The only way I know to get fat is eat a lot but there will always be people that don't want to put in the effort.

Reddit is a horrible place to get advice.

My Boss got me an Aderlic (brand name) executive office chair and I love it.
I think it was around $350 IIRC

That would be interesting to say the least.
I would freak out being 550 lbs first and would think its a dream.
I would probably lay in bed feeling all the new fat. LOL
Still have clothes from when I was 425 and it would be interesting to see if they would fit.

If you get full stand up walk around a few minutes then sit down and eat more.

That is amazing it took me years to gain that much.
BTW how are you doing? Been a long time.

120 in one year?