Most tarantulas are not so good with handling. They can be easy to look after and feed, but can suffer stress with being disturbed. Realy they should be viewed liked fish, you only look at them. Saying that, there are a few docile types of tarantulas especially something like a B.smithi which can cope with some handling, but you can always get the odd one which is a bit bad tempered. Also remember that some females can live 30+ years.
If she likes bugs there are also giant millipedes or giant African land snails.
Make sure you do your research though, some bugs do secrete things which are not good or have iffy hairs.
Just as a thought, how about getting her a bug finding kit with a small tank, tweezers, USB microscope etc? She can go into the garden or woods, find something interesting, look after it for a while, and learn about it and release it again. It can be a good way to enjoy lots of different types of bugs without so much commitment.