As long as she is out by choice she needs vacinnations, Flu and enteritus and a chip and possible a breakaway buckle coller......not one with the elastic.
You will have to start from scratch with vacs but at her age dont do FeLV as not needed, so vacs are in two parts about 3e weeks apart and she really should not be out before the course finishes.
I take it she is neutered? If not get her in quick or kittens will be on your doorstep and she is too old for them.
Frontline is good and a wormer can be got from your vet, he can give when he sees her.........or a spot on wormer only from vets bit must be put on a week before or after spot on flea.
Never buy Bob Martins or other over the counter flea or wormer, except frontline flea. Miilibax is a mini pill from vet as a wormer but I find the spot on better and easier to administer.
Fleas in the house can be treated with a spray from the vets Indorex or something else, again dont by over the counter stuff. I know that others will use this if one flea comes in on a cat but I dont, havent used it ever here and that nearly 7 years.
I also only flea and worm once a year unless there is evidence of a need
If she is now going out you really should consider insurance, AXA is the best and cheapest and you can get an online quote.