Are you giving her milk before the finger food? As she might be full up.
Just keep trying different things, baby led weaning was a great book and helped me be more confident in what I could give DS.
Food is fun until their one is definitely what you should think in the back of your mind. The aim isn't to fill them up with a big shepherds pie, but to expose them to the sorts of food you and your partner eat every day so when they are 2 they will be eating dinner with you.
Try to avoid lots of sweet food and make them hunger for them as they can't just eat sweet foods when they are older. Cut what you can into baton type shapes so they can hold it. Cucumber, meat, toast with marmite, peppers, carrot.
I loved watching him love stuff and spit stuff out in disgust it was funny watching his taste developing. Just relax and have fun watching them try things it should be a fun playtime type thing, not an anxious time. She will pick up on your anxiety and pressure to eat and it may put her off.
Also a Nuby as great as it has a net to put things like banana in for them to suck it through and a ha doe they can hold. Worked from 6-8 months for us.