Hello Maxine,
This could be a flash story or a lead into something longer, which is great because it gives you, as the writer, lots of options.
I am unsure what you are asking to look for, but if it is 'interest' then yes, I'd like to know more. I didn't really get to see much of their characters' personalities but 400 is not many words to start a story.
there were a few things that caught my eye. They are not bad things, just things that you could tighten for the read.
I'll show yo an example with your writing.
you wrote:
Helen found a second candle on the table and lit it giving them more light. Then she screamed. Liz spun round to see what the problem was and saw lying on the floor by the back door was a body. Covered in blood, the old man had to be dead; his eyes stared at them in vacant accusation. This was their fault; they had kicked him out of the house, his house he’d claimed. Now he was dead.try to use all your words you write, use them for the characters, use them for the setting, but don't just put them there for no reason. The word 'it' is a strange word, many don't even see 'it' when they write. but a lot of times 'it' is redundant and adds words/fluffs. look at your first sentence. Helen lit the second candle on the table and then screamed. so that's what is important. not that it gave them more light, all candles do, but also because you detached the 'Then she screamed.' from the light of the candle and what it revealed. so on its own' Then she screamed' isn't as strong of image as 'and then screamed. (we don't need to say 'she' because the subject hasn't changed, only when Liz spins, does it.
'had to be dead
now he was dead'
try not to repeat things, sometimes they work to enhance, but sometimes just a rewording does the same and lessens the repeat.
a body - they know who it is, so why not simple say who he is and why he's there, and why they know him all in one thought, so the reader attaches all the possible emotions. it ties them all together. ie
Helen lit a second candle and then screamed. Sprawled across their floor was the old man they had beaten.
"He must have crawled back." someone whispered.
It used to be his home.
***
anyway, I liked the first part more, right up to the girls separation, the writing got a bit loose at the end. Still, I see potential and a great story, could be betrayal of each friend, or them standing together in jail, sisters til the end

thanks for the read
Temp