That's provably false...

aisyah88 uses "1CSjY" address here: http://archive.is/49Ou5#selection-4213.14-4213.48
Dewi08 uses "1iXHN" address here: http://archive.is/49Ou5#selection-4453.13-4453.46

These two addresses are effectively from the same wallet: https://www.walletexplorer.com/txid/51ac9dd375cf55d9ac95e53189f8f4807111bcdfdb246ce335d03d0e5c625741

They're both inputs and spent together.

ais08 uses "1BPEL" address here: http://archive.is/49Ou5#selection-5981.12-5981.46

This address is also linked in with "1CSjY" as an input here: https://www.walletexplorer.com/txid/0da69231b1b0a7984799efce5c9b41074128d01451e0981e97c8f47cb65d3fc5


And the "1CSjY" has been sending all the BTC to "your" '12ssm' address:
https://www.walletexplorer.com/txid/ac465ff81157d602ecee738c85270920a1c47df2c360f4897ad671da458b0e9f
https://www.walletexplorer.com/txid/350fedeb7cc1a72fcbdd7a728a9255c9dd25a31fd1d6d2ecc17c27de3661e97d
https://www.walletexplorer.com/txid/3fae10cb40dc7210461ce5fa404072776c545e0bed25979d23c7c4fcfe049d08
https://www.walletexplorer.com/txid/5befa2d3de10293eacfba7b0dddf722cbedb1a5881ada8efb958a83f19831f40
https://www.walletexplorer.com/txid/8e48f84875e0cdf20719877ccc03f94f094e9691573df2fe4b1d7b2a64fd69eb
etc... (there are more)

Interestingly... "12ssm" is apparently a Bittrex deposit address...

TLDR; aisyah88 and Dewi08 and ais08 are proven to be all using the same wallet... and channeling funds into Ris88's Bittrex deposit address...