Consider what you have on you and what else you may normally carry around
Contrary to the daily Mail you can defend yourself to any reasonable level, under which ‘reasonable’ is at the time - not with hindsight.
But you cannot plan to ‘defend’ with a weapon. Even something innocuous and fully ‘legal’ becomes illegal if your intent to use it renders it an offensive weapon.
It’s perfectly normal for a woman to have hair care in their handbag, and could pull out a brush, they may or may not use a comb. If you decide to carry a comb with a spike handle then that has become an offensive weapon of your intent is the plan to use it to defend you.
But a chunky brush can batter an attacker, and the handle used to poke them in a stabby way.
Hair spray etc is perfectly normal in a handbag
You might not be carrying your handbag with all of your makeup whilst walking the dog in a field. Do you have something in your jacket pocket? Perhaps you always carry an emergency mini hairspray in your coat pocket in case you need a quick spruce up without your whole makeup kit to hand
Keys are useful, and are a bit ‘stabby’ without being blades, so can be used in a struggle - but if you drop car keys during a struggle and get away from an immediate attack. then that could prevent you from getting into your car and leaving
Self defence alarms work by volume and also call for attention - if there is someone near enough. Out dog walking in the woods it will make a loud noise and you can run away, but when you stop pressing the trigger it goes silent - so could be taken from you in a struggle
Alarms, and marking sprays will be legal to carry - you aren’t intending to harm anyone and you’re in a reasonable level of ‘fear’ in the 21st century. You can get over that fear with an alarm etc
Pepper spray is illegal, there are similar sprays that claim legality but you may or may not find yourself trying to justify what happened depending on circumstances
Could anything be used against you?
Think about what could happen in situations, look for ways out, avoid escalating and especially avoiding items and actions that could make things worse.
Kicking a man in the crotch hurts - but also makes him angry, we don’t all curl up into a ball at the slightest tap as seen on tv
Stilletto heels down the shin is a stopper
But it’s unlikely that somebody is wearing heels out in the woods, ideally if in heels then there will be a busier area with people around
Check out some YouTube’s but if it’s all about how tough you can be and fighting back then move over to another channel, if it’s about getting out of a situation, fighting to a level and getting out then keep watching. The key is protection - what is going to stop something bad happening and get out out of the situation fast