Colleague didn't hand over tip

Right so I'm gonna seem super petty but just wanted to get opinions on this

So a table of 14 came into the restaurant i work at. And one of the ladies gave me a £20 tip for myself however work says we have to hand them in so I did (its also my 2nd shift so obviously I was gonna obey the rules) the lady then gave my colleague a £20 tips half an hour later (she's been working there for a few months).

My colleague says to me let's keep the tip and split it and i was like but we're on camera and she said no one checks. So I said okay. After our shift we walk home together and she doesn't mention splitting it. Now I know she still has it but I didn't say anything. It only would have been 10 pounds each but I'm a bit salty that she kept it and I haven't pulled her up on it. I'm not gonna snitch because she needs it more than I do. I'm just regretful I handed mine in ahahhah

She did not play fair so you have to ask her for your share.

I'm a reak


I'm a really awkward person and I don't want to cause bad blood already. Plus I think she'd lie and say she ended up handing it in because that was the first time I met her so she probably doesn't know whether I'll tell the boss or not