What do I do?

Long story short my best friend of 5years mother passed away and the funeral is in a week, I've been having money troubles, in debt to family members, I've got a broken bed, income hasn't been great, just enough to feed myself, keeps my lights on and get a new bed, she's grieving heavily but when I met her the other day, she even offered to pay, so I asked her to pay for my travelles as she lives 2hrs away and it cost me £35 on travel alone just to see her, but I feel bad but I'm also broke and also said in return I will pay for journey up next time, do you think that's okay?
I feel so bad but I'm genuinely broke and part of me doesn't want to go because I don't want to burden her with money, I've never liked funerals and I'm missing work I can't work 4days including the night before because I need to leave at6/7am if I want to make it on time, I'm genuinely confused on what to do, of course I want and know it's important to be there but I'm also pushing my income back to go to this for a few hours, I don't mean to sound selfish or anything, but life still goes on and things are not financially good for me right now, let alone emotionally.
Yes I know I know, it's not all about me there's her, her family and friends, I get it, I don't know, I hate funerals, I hate goodbyes, but it's also the last time I will get to go?

Ps. Please don't be nasty in the comments it will be removed, I can assure you of that.